There are two ways to create reflections in Maya: by creating true reflections and by simulating reflections.
You can create true reflections by raytracing your scene. However, although this technique creates realistic reflections, it also increases the complexity of your scene and demands a significant amount of rendering time. For more information on how to create true reflections, see True reflections and Create true reflections.
Alternatively, you can simulate reflections to reduce rendering time by using a texture as a reflection map. For more information on how to simulate reflections, see Simulated reflections.